/**
  ******************************************************************************
  * @file    USB_Device/CustomHID_Standalone/Src/usbd_desc.c
  * @author  MCD Application Team
  * @version V1.4.4
  * @date    06-May-2016
  * @brief   This file provides the USBD descriptors and string formating method.
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright ?2016 STMicroelectronics International N.V. 
  * All rights reserved.</center></h2>
  *
  * Redistribution and use in source and binary forms, with or without 
  * modification, are permitted, provided that the following conditions are met:
  *
  * 1. Redistribution of source code must retain the above copyright notice, 
  *    this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright notice,
  *    this list of conditions and the following disclaimer in the documentation
  *    and/or other materials provided with the distribution.
  * 3. Neither the name of STMicroelectronics nor the names of other 
  *    contributors to this software may be used to endorse or promote products 
  *    derived from this software without specific written permission.
  * 4. This software, including modifications and/or derivative works of this 
  *    software, must execute solely and exclusively on microcontroller or
  *    microprocessor devices manufactured by or for STMicroelectronics.
  * 5. Redistribution and use of this software other than as permitted under 
  *    this license is void and will automatically terminate your rights under 
  *    this license. 
  *
  * THIS SOFTWARE IS PROVIDED BY STMICROELECTRONICS AND CONTRIBUTORS "AS IS" 
  * AND ANY EXPRESS, IMPLIED OR STATUTORY WARRANTIES, INCLUDING, BUT NOT 
  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A 
  * PARTICULAR PURPOSE AND NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY
  * RIGHTS ARE DISCLAIMED TO THE FULLEST EXTENT PERMITTED BY LAW. IN NO EVENT 
  * SHALL STMICROELECTRONICS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, 
  * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 
  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 
  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
  * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  ******************************************************************************
  */
  
/* Includes ------------------------------------------------------------------*/
#include "usbd_core.h"
#include "usbd_conf.h"
#include "system.h"

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
#define USBD_HID_CUSTOM_VID                      0x0483
#define USBD_HID_CUSTOM_PID                      0x5750
#define USBD_HID_CUSTOM_LANGID_STRING            0x409
#define USBD_HID_CUSTOM_MANUFACTURER_STRING      "STMicroelectronics"
#define USBD_HID_CUSTOM_PRODUCT_HS_STRING        "HID Custome in HS Mode"
#define USBD_HID_CUSTOM_PRODUCT_FS_STRING        "HID Custome in FS Mode"
#define USBD_HID_CUSTOM_CONFIGURATION_HS_STRING  "HID Config"
#define USBD_HID_CUSTOM_INTERFACE_HS_STRING      "HID Interface"
#define USBD_HID_CUSTOM_CONFIGURATION_FS_STRING  "HID Config"
#define USBD_HID_CUSTOM_INTERFACE_FS_STRING      "HID Interface"

#define USBD_HID_CUSTOM_STRING_SERIAL_SIZE       0x1A

/* Private macro -------------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
uint8_t *USBD_HID_CUSTOM_DeviceDescriptor(USBD_SpeedTypeDef speed, uint16_t *length);
uint8_t *USBD_HID_CUSTOM_LangIDStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length);
uint8_t *USBD_HID_CUSTOM_ManufacturerStrDescriptor (USBD_SpeedTypeDef speed, uint16_t *length);
uint8_t *USBD_HID_CUSTOM_ProductStrDescriptor (USBD_SpeedTypeDef speed, uint16_t *length);
uint8_t *USBD_HID_CUSTOM_SerialStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length);
uint8_t *USBD_HID_CUSTOM_ConfigStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length);
uint8_t *USBD_HID_CUSTOM_InterfaceStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length);
#ifdef USB_SUPPORT_USER_STRING_DESC
uint8_t *USBD_HID_USRStringDesc (USBD_SpeedTypeDef speed, uint8_t idx, uint16_t *length);  
#endif /* USB_SUPPORT_USER_STRING_DESC */  

/* Private variables ---------------------------------------------------------*/
USBD_DescriptorsTypeDef USBD_HID_Custom_Desc = {
    USBD_HID_CUSTOM_DeviceDescriptor,
    USBD_HID_CUSTOM_LangIDStrDescriptor,
    USBD_HID_CUSTOM_ManufacturerStrDescriptor,
    USBD_HID_CUSTOM_ProductStrDescriptor,
    USBD_HID_CUSTOM_SerialStrDescriptor,
    USBD_HID_CUSTOM_ConfigStrDescriptor,
    USBD_HID_CUSTOM_InterfaceStrDescriptor,
};

/* USB Standard Device Descriptor */
#if defined ( __ICCARM__ ) /*!< IAR Compiler */
  #pragma data_alignment=4   
#endif
static __ALIGN_BEGIN uint8_t USBD_HID_CUSTOM_DeviceDesc[USB_LEN_DEV_DESC] __ALIGN_END = {
  0x12,                       /* bLength */
  USB_DESC_TYPE_DEVICE,       /* bDescriptorType */
  0x00,                       /* bcdUSB */
  0x02,
  0x00,                       /* bDeviceClass */
  0x00,                       /* bDeviceSubClass */
  0x00,                       /* bDeviceProtocol */
  USB_MAX_EP0_SIZE,           /* bMaxPacketSize */
  LOBYTE(USBD_HID_CUSTOM_VID),           /* idVendor */
  HIBYTE(USBD_HID_CUSTOM_VID),           /* idVendor */
  LOBYTE(USBD_HID_CUSTOM_PID),           /* idVendor */
  HIBYTE(USBD_HID_CUSTOM_PID),           /* idVendor */
  0x00,                       /* bcdDevice rel. 2.00 */
  0x02,
  USBD_IDX_MFC_STR,           /* Index of manufacturer string */
  USBD_IDX_PRODUCT_STR,       /* Index of product string */
  USBD_IDX_SERIAL_STR,        /* Index of serial number string */
  USBD_MAX_NUM_CONFIGURATION  /* bNumConfigurations */
}; /* USB_DeviceDescriptor */

/* USB Standard Device Descriptor */
#if defined ( __ICCARM__ ) /*!< IAR Compiler */
  #pragma data_alignment=4   
#endif
static __ALIGN_BEGIN uint8_t USBD_HID_CUSTOM_LangIDDesc[USB_LEN_LANGID_STR_DESC] __ALIGN_END = {
  USB_LEN_LANGID_STR_DESC,         
  USB_DESC_TYPE_STRING,       
  LOBYTE(USBD_HID_CUSTOM_LANGID_STRING),
  HIBYTE(USBD_HID_CUSTOM_LANGID_STRING), 
};

static uint8_t USBD_HID_CUSTOM_StringSerial[USBD_HID_CUSTOM_STRING_SERIAL_SIZE] =
{
  USBD_HID_CUSTOM_STRING_SERIAL_SIZE,      
  USB_DESC_TYPE_STRING,    
};

#if defined ( __ICCARM__ ) /*!< IAR Compiler */
  #pragma data_alignment=4   
#endif
static __ALIGN_BEGIN uint8_t USBD_HID_CUSTOM_StrDesc[USBD_MAX_STR_DESC_SIZ] __ALIGN_END;



/* Private functions ---------------------------------------------------------*/
static void IntToUnicode (uint32_t value , uint8_t *pbuf , uint8_t len);
static void Get_SerialNum(void);

/**
  * @brief  Returns the device descriptor. 
  * @param  speed: Current device speed
  * @param  length: Pointer to data length variable
  * @retval Pointer to descriptor buffer
  */
uint8_t *USBD_HID_CUSTOM_DeviceDescriptor(USBD_SpeedTypeDef speed, uint16_t *length)
{
    *length = sizeof(USBD_HID_CUSTOM_DeviceDesc);
    return (uint8_t *)USBD_HID_CUSTOM_DeviceDesc;
}

/**
  * @brief  Returns the LangID string descriptor.        
  * @param  speed: Current device speed
  * @param  length: Pointer to data length variable
  * @retval Pointer to descriptor buffer
  */
uint8_t *USBD_HID_CUSTOM_LangIDStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length)
{
    *length = sizeof(USBD_HID_CUSTOM_LangIDDesc);
    return (uint8_t *)USBD_HID_CUSTOM_LangIDDesc;
}

/**
  * @brief  Returns the product string descriptor. 
  * @param  speed: Current device speed
  * @param  length: Pointer to data length variable
  * @retval Pointer to descriptor buffer
  */
uint8_t *USBD_HID_CUSTOM_ProductStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length)
{
    if (speed == 0)
    {
        USBD_GetString((uint8_t *)(uint8_t *)USBD_HID_CUSTOM_PRODUCT_HS_STRING, USBD_HID_CUSTOM_StrDesc, length);
    }
    else
    {
        USBD_GetString((uint8_t *)(uint8_t *)USBD_HID_CUSTOM_PRODUCT_FS_STRING, USBD_HID_CUSTOM_StrDesc, length);
    }
    return USBD_HID_CUSTOM_StrDesc;
}

/**
  * @brief  Returns the manufacturer string descriptor. 
  * @param  speed: Current device speed
  * @param  length: Pointer to data length variable
  * @retval Pointer to descriptor buffer
  */
uint8_t *USBD_HID_CUSTOM_ManufacturerStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length)
{
    USBD_GetString((uint8_t *)(uint8_t *)USBD_HID_CUSTOM_MANUFACTURER_STRING, USBD_HID_CUSTOM_StrDesc, length);
    return USBD_HID_CUSTOM_StrDesc;
}

/**
  * @brief  Returns the serial number string descriptor.        
  * @param  speed: Current device speed
  * @param  length: Pointer to data length variable
  * @retval Pointer to descriptor buffer
  */
uint8_t *USBD_HID_CUSTOM_SerialStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length)
{
    *length = USBD_HID_CUSTOM_STRING_SERIAL_SIZE;

    /* Update the serial number string descriptor with the data from the unique ID*/
    Get_SerialNum();

    return (uint8_t *)USBD_HID_CUSTOM_StringSerial;
}

/**
  * @brief  Returns the configuration string descriptor.    
  * @param  speed: Current device speed
  * @param  length: Pointer to data length variable
  * @retval Pointer to descriptor buffer
  */
uint8_t *USBD_HID_CUSTOM_ConfigStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length)
{
    if (speed == USBD_SPEED_HIGH)
    {
        USBD_GetString((uint8_t *)(uint8_t *)USBD_HID_CUSTOM_CONFIGURATION_HS_STRING, USBD_HID_CUSTOM_StrDesc, length);
    }
    else
    {
        USBD_GetString((uint8_t *)(uint8_t *)USBD_HID_CUSTOM_CONFIGURATION_FS_STRING, USBD_HID_CUSTOM_StrDesc, length);
    }
    return USBD_HID_CUSTOM_StrDesc;
}

/**
  * @brief  Returns the interface string descriptor.        
  * @param  speed: Current device speed
  * @param  length: Pointer to data length variable
  * @retval Pointer to descriptor buffer
  */
uint8_t *USBD_HID_CUSTOM_InterfaceStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length)
{
    if (speed == 0)
    {
        USBD_GetString((uint8_t *)(uint8_t *)USBD_HID_CUSTOM_INTERFACE_HS_STRING, USBD_HID_CUSTOM_StrDesc, length);
    }
    else
    {
        USBD_GetString((uint8_t *)(uint8_t *)USBD_HID_CUSTOM_INTERFACE_FS_STRING, USBD_HID_CUSTOM_StrDesc, length);
    }
    return USBD_HID_CUSTOM_StrDesc;
}

/**
  * @brief  Create the serial number string descriptor 
  * @param  None 
  * @retval None
  */
static void Get_SerialNum(void)
{
    uint32_t deviceserial0, deviceserial1, deviceserial2;

    // deviceserial0 = *(uint32_t*)DEVICE_ID1;
    // deviceserial1 = *(uint32_t*)DEVICE_ID2;
    // deviceserial2 = *(uint32_t*)DEVICE_ID3;

    /* 固定usb序列号,新设备接入电脑就不需要重新安装驱动 */
    // deviceserial0 = 0x001A001D;
    // deviceserial1 = 0x31375117;
    // deviceserial2 = 0x32383936;

    system_get_mcu_sn(&deviceserial0, &deviceserial1, &deviceserial2);

    deviceserial0 += deviceserial2;

    if (deviceserial0 != 0)
    {
        IntToUnicode(deviceserial0, &USBD_HID_CUSTOM_StringSerial[2], 8);
        IntToUnicode(deviceserial1, &USBD_HID_CUSTOM_StringSerial[18], 4);
    }
}

/**
  * @brief  Convert Hex 32Bits value into char 
  * @param  value: value to convert
  * @param  pbuf: pointer to the buffer 
  * @param  len: buffer length
  * @retval None
  */
static void IntToUnicode(uint32_t value, uint8_t *pbuf, uint8_t len)
{
    uint8_t idx = 0;

    for (idx = 0; idx < len; idx++)
    {
        if (((value >> 28)) < 0xA)
        {
            pbuf[2 * idx] = (value >> 28) + '0';
        }
        else
        {
            pbuf[2 * idx] = (value >> 28) + 'A' - 10;
        }

        value = value << 4;

        pbuf[2 * idx + 1] = 0;
    }
}

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/


